<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <title>功能正在开发中</title>
  <style>
      *{
          margin: 0px;
          padding: 0px;
          overflow: hidden;
      }
      .bg{
          height: 100%;
          width: 100%;
      }
      .bg-image{
          background-image: url('statics/img/developing.png');
          background-repeat: no-repeat;
          width: 492px;
          height: 355px;
          background-size: 100%;
          position: absolute;
          top: 0px;
          bottom: 0px;
          left: 0px;
          right: 0px;
          margin: auto;
      }
  </style>
</head>
<body>
<div class="bg">
    <div class="bg-image"></div>
</div>
</body>
</html>
